Our company mainly deal with the fasterner. We own two factorys, one manufacure the stainless steel and brass screws, such as set screws, tapping screw, machine screw with different kind of head and drive. The other one make the high tensile big and long bolts and studs used for the oil, gas and railway. Our factory covers an area of 37000 square meter, and we own more than 200 sets of machine to manufacture the screws and bolts. We have a series of testing machine to make sure our quality, including the salt spray, spectrograph , hardness tester, tensile machine, impact testing machine, universal testing machine, etc. Should you have any relative inquires, just feel free to contact me. I am looking forward to your inquiry.